Level 3 Communications

Based in Louisville, Colo., privately owned Zayo Group is a provider of bandwidth infrastructure solutions and carrier neutral colocation. Zayo Group is organized into autonomous business units supporting customers who require lit and dark fiber services and carrier neutral colocation. Zayo s business units provide these services over their regional, metro and fiber to the tower networks.

Founded in 1979, Intrado provides emergency telephony solutions that manage and deliver mission-critical information for telecommunications providers, including incumbent local exchange carriers, competitive local exchange carriers, wireless carriers, state and local governments and public safety organizations in the United States. The company manages the data that enables 911 emergency calls to be routed to the appropriate public safety agency with accurate and timely information about the caller's identification, callback number and location. In addition, Intrado licenses its software to carriers to manage the delivery of 911 data management services in-house. The company also offers complex data management solutions, network transaction programs, wireless data services, and mobile messaging and notification services to communications service providers and public safety organizations. Intrado maintains its headquarters in Longmont, Colo., and has branch offices in Illinois, Texas, Europe, African and the Middle East.